▪️ validateResponses

Determines whether the validator should validate responses. Additionally, it accepts an object of configuragble response validation options.

Option-schema

validateResponses: false | true | {
    removeAdditional: 'failing',
    coerceTypes: true | false | 'array',
    onError: (error, body, req): void
}

validateResponses

true - validate responses in 'strict' mode i.e. responses MUST match the schema.
false (default) - do not validate responses
{ ... } - validate responses with options
- removeAdditional
  
  Determines whether the validator will remove additional properties, prior to validation.
  
  Options Schema
```
removeAdditional: 'failing'
```
  - "failing" - additional properties that fail schema validation are automatically removed from the response.
- coerceTypes
  - true - coerce scalar data types.
  - false - (default) do not coerce types. (almost always the desired behavior)
  - "array" - in addition to coercions between scalar types, coerce scalar data to an array with one element and vice versa (as required by the schema).
- onError
  - (error, body, req): void - A function that will be invoked on response validation error, instead of the default handling. Useful if you want to log an error or emit a metric, but don't want to actually fail the request. Receives the validation error, the offending response body, and the express request object.
    
    For example:
```
validateResponses: {
    onError: (error, body, req) => {
        console.log(`Response body fails validation: `, error);
        console.log(`Emitted from:`, req.originalUrl);
        console.debug(body);
    }
}
```